Adjustable revolving moldboard



Nov. 19, 1929. c. HILL ADJUSTABLE REVOLVING MOLDBOARD 2 Sheets-Sheet 1 Filed Oct. 1927 Chan/es INVENTOR. By flaw/m ATTORNEYS.

M'fnesses ac-cauckmlk.

Nov. 19, 1929. c. HILL ADJUSTABLE REVOLVING MOLDBOARD 2 Sheets-Sheet 2' I/IIIl/llllllfl/ Filed Oct. 5, 1927 mar/6 /1/// v INV'ENTOR. BY W A TTORNEYS.

Patented Nov. 19, 1929 UNITED STATES PATENT OFFlCE ADJUSTABLE REVOLVING MOLDBOARD Application filed October 3, 1927. Serial No. 223,820.

This invention relates to improvements in plows and more particularly to an improved construction and arrangement of the moldboards of a lister plow, although the principles of the invention may find embodiment in subsoilers, drills, and other similar farm machinery.

One of the objects of the invention is to provide an improved rotary mold-board con- 1 struction for installation upon lister plows, the invention contemplating the provision of novel means whereby mold-boards, which are of the disk type, may be readily angularly adjusted, so as to rotate in different planes at different angles with respect to the share of the lister, such adjustment providing for operation of the lister with maximum efficiency, inasmuch as the angular disposition of the revolving mold-boards may be varied in accordance with the conditions of the soil.

Another object of the invention is to provide a revolving mold-board attachment for listers and the like, embodying means for adjusting the angular disposition of the mold- 5 board, and which adjusting means will be capable of convenient and accurate adjustment without the necessityof dismounting the mold-boards, in order to effect such adjustment. i v Another object of the invention is to provide, in combination with the revolving moldboards, a novel share for attachment to the beam of the lister and so formed as to lift the soil and present the same to the revolving mold-boards in a manner to insure of functioning of the mold-boards with a maximum degree of efiiciency.

While the accompanying drawings and the description which is to follow, constitute a disclosure of the preferred embodiment of the invention, it will be understood that various changes may be made within the scope of what is claimed.

In the accompanying drawings:

Figure 1 is a side elevation of the structure embodying the invention;

Figure 2 is a top plan view thereof;

Figure 3 is a vertical section View through the structure shown in Figure 1 taken at a plane in advance of the revolving moldboards;

Figure 4 is a vertical sectional view taken substantially on the line 4-4: of Figure 2 looking in the direction indicated by the arrows.

In the drawings, the beam of the lister upon which the mold-boards and the share, embodying the invention, are mounted, is indicated by the numeral 1, and is of the usual construction, the same being provided with the usual forwardly directed and widened end 2 for attachment of the share which will presently be described.

The mold-board structure includes a supporting beam consisting of a channelled body 3 which is disposed to straddle the beam 1 and which is provided, at its opposite sides, with supporting wings 4 which extend downwardly and rearwardly at an angle from the portion 3 and which support the revolving mold-boards, in a manner which will now be explained.

The mold-boards are indicated by the numeral 5 and are of the disk type, and each of the mold-boardsis supported upon a respective oneof the wings 1 of the supporting member. Thev supporting means for each mold-board comprises a hub 6 which includes a hollow cylindrical body portion -7 which is formed at one end with a head 8 of circular form and disposed against the inner side of the respective mold board 5 at the center thereof, the head being secured to the mold-board by means of screws or bolts 9. A bearing head 10 is assembled with the hub 6, being provided, centrally, with a hollow cylindrical neck '11 which is rotatably adjustably fitted in the bore of the cylindrical body 7 of the hub 6, that face of the body 10 which is presented towards the head 8 of the hub 6, being formed with an annular seat 12, surrounding the inner end of the neck 11, and rotatably accommodating the adjacent end of the body 7 of the hub 6. The other face of the head 10, indicated byvthe numeral 13, is disposed at an angle to the axis of the head and consequently at an angle to the face of the head inwhich the seat 1.2 isformed, and this angularly distherefore provide for tree rotary movement of the disks 5, a bearing disk 14 is disposed against the outer taco of the head Set the hub 6 and is received flush within a circular recess formed in said face of the head, the

disk 14 being clamped against the side of the disk 5 at the time the bolts 9 are tightened. The disk 14 is formed centrally with an opening 16, and the portion of the disk-which surrounds this opening is struck out to substantially-conicalform to provide a ball race inclicated by the numeral 17, bearing balls '18 being arranged about this portion of the said disk 1 1 and within an annular race 19 formed in the end of the neck 11. A'bolt 20 is fitted through the bore of the neckll and has a beveledhead 21 which is received flush within the concavesideof the struck-out central portion 17 ofthe head 14, the-head ofthe bolt being confined between this-portion of the disk 14 and that face of the mold-board diskthrough the said opening, and a nut 23 is fittedonto the endof the bolt and is adjusted to bear against a Washer 24: likewise fitted on'the bolt and held against-the inner side of the wing. In order that the member 10'may be rotatably adjusted, for a purposewhich will now be explained, it is provided at apointin its periphery, with an'outwardly projecting lug or finger-piece 25 which may be grasped, for rotatably adjusting the head 10, when the nut- 23 is slightly loosened.

From the foregoing description of this portion of the structure embodying the invention, it will be evident thatthe hub 6 of the disk 5, comprising the revolving moldboard, is free torotate upon the neck 11' of the member 10, so that this neck constitutes,

in efiect', aspindle'for the said hub. It Will also be evident by reference to Figure 2 01?- the drawings that, dueto the angularly diverging dispositionof the Wings 46 of the attaching and supporting member 3, the bolts 20, the neck 11 of the headlO; and the cylindrical body 7 of the hub6 of the mold-board disk 5, are concentrically arranged-and extend forwardly and laterally at anangle to the line of draft of the listen-the hubs for the two mold-boarddisks beingoppositely angu larly disposed, so'that they are relatively arranged on forwardly diverging'lines. As it will be desirable to vary the angular dispo sition of themold-board disks 5, in accord-- ance with different soil cond1t1ons,and 1n 7 order to render the d1sks most etficient in view of the conditions encountered the angular disposition of each disk may be readily varied by slightly loosening the respective nuts 23 and rotatably adjusting the respective head 10 which adjustment, due to the angular disposition of the outer face 13 of the head with respect to the axisot the head, will result in angular adjustment of the axisof the member 10 with respect to the plane of thesupporting wing 4. 'It will be evident that this rotative adjustment of the members ltl'may be readily effected, and that a wide range of adjustment of the mold-board disks is obtained;

In order that the furrows may be opened and the soil directed and elevated in a manner to substantially present it to the mold board disks and thus provide for most effective action ofthe-disks, a share, of the construction illustrated inf Figs. 1, 2 and 3 0i" the drawings, ispreterablyemployed, incombination with the disks, this share-being indicated in general by the numeral 26. The channelled body Bot theattaching andsup porting member oat' the structure is, of course, to be bolted or otherwise secured totlie lister beam 1, and, inorder that the share 26 maybe supported in proper position in advance of the mold board disks 5, the forward por tion'of the said member is flattened toprovide an attaching.and supporting head 27 to which theshaft 26 is bolted as indicated by the numeral 28; reference-toFigures 1, 2 and 3 of the drawings it will be observed that the share 26'colnprise's a blade 29 having a pointed forward end 30' and oppositely dbwnwardly and'laterally inclined side por-, tions '31, the bladebeing secured to thehead 27 of the supporting member with its longitudinal' center" line extending midway between the mold board disks 5, and conscquently in the lineot draft of the list'er; The rear portion'of the blade 29*is extended up wardly, as indicatedby the numeral 32, from the point ofattachment' otthe said blade29 to the head 2310f the supportingmember, andt this upwardly extended portion of the blade comprisingjthe share, isarranged at rearwardangle of inclinationiland' is tapered. in the direction of its upper end, its upper end'portion being located immediately inad vance oi" the forward upper sides of the moldboarcb disks and relatively close thereto.

7 It will beevident from the foregoing description of the share, that as the same passes through a furrow, the soil at the opposite sides of tlie f'ur-row will bedirect-ed upwardly and rearwardly and therefore, as previously stated, substantially presented to the moldboarddisksb, thus insuring of most effective turning aside of thesoil by the disks,

In order that the disks-"may be substantially self sharpening and likewise in order to obtain a more thoroughly side-wise delivfit cry of the soil acted upon by the disks, the peripheral portion of each disk is outwardly flared or deflected, continuously throughout its circumference, as indicated by the numeral 33.

Having thus described my invention what I claim as new is An adjustable revolving mold-board comprising a supporting member, a moldboa-rd disk, a hub having a cylindrical body portion and a head, means securing the head to the disk, a bearing disk disposed against the face of the first mentioned disk, the head of the hub having a seat in its face which contacts the mold-board disk, the periphery of the bearing disk seating in said seat and the bearing disk having a central opening and a seat in its side which contacts the mold-board disk, a cylindrical member upon which the cylindrical body of the hub is rotatably mounted, the member having a head provided with a face at an angle to the axis of the member and disposed against the support, a bolt having its head seating in the seat in the bearing disk, the last mentioned member having an axial opening therein, the said bolt eX- tending through said opening and through the supporting member, a nut threaded upon the bolt and bearing against the supporting member and maintaining the last mentioned member in positions of rotative adjustment upon the bolt, and anti-friction bearing elements arranged between the bearing disk and the inner end of the tubular body of said member.

In testimony whereof I aflix my signature.

CHARLES HILL. 

